How Much Hp Can I Get From A 382
#3
TECH Senior Member
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Originally Posted by hydfixer
How much do you think the avarge hp is from a 382 with G5X2 cam and good set of heads?
What's a "good" set of heads? What size valves? What's your static compression ratio? What are the flow #s?
There's really no way to guess an average. However, most people use 1.4hp/CID, so:
1.4hp/CID * 382 CID = 534 HP (crank) * 15% drivetrain loss = ~450 RWHP
#4
Originally Posted by Orange Peel
Uh oh, not happy from yesterday dude?? What did you put down?
#5
Originally Posted by CANNIBAL
Well that cam was designed for stock head 346 LS1s. You don't have an ideal cam for your engine combo.
What's a "good" set of heads? What size valves? What's your static compression ratio? What are the flow #s?
There's really no way to guess an average. However, most people use 1.4hp/CID, so:
1.4hp/CID * 382 CID = 534 HP (crank) * 15% drivetrain loss = ~450 RWHP
What's a "good" set of heads? What size valves? What's your static compression ratio? What are the flow #s?
There's really no way to guess an average. However, most people use 1.4hp/CID, so:
1.4hp/CID * 382 CID = 534 HP (crank) * 15% drivetrain loss = ~450 RWHP
#6
TECH Senior Member
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Originally Posted by hydfixer
What would recomend for a cam then?
Was the car dyno tuned? If so, was there any KR, etc?
Too little info to really help you out very much.
#7
Originally Posted by CANNIBAL
I'm not a cam designeer but you definately need to get in touch with any of the tuners at the right, Futral, MTI, LG, etc to get a custom spec cam to your goals. An off the shelf grind will not give you the #s you want.
Was the car dyno tuned? If so, was there any KR, etc?
Too little info to really help you out very much.
Was the car dyno tuned? If so, was there any KR, etc?
Too little info to really help you out very much.
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#8
TECH Senior Member
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Originally Posted by hydfixer
Yes it was dyno tuned, no kr at all, I had the heads done by a local porter and he said he ls1 experance, he messed with the combustion chamber to much and got ride of the point between the valves. Now I find out that if touch the chamber you lose the swerial and hp.
Did you get flow #s on the heads? Were the heads milled any? Is the valvetrain setup correctly?
#9
Originally Posted by CANNIBAL
Can you send me the dyno graph so I can post it? lprocter@alltel.net
Did you get flow #s on the heads? Were the heads milled any? Is the valvetrain setup correctly?
Did you get flow #s on the heads? Were the heads milled any? Is the valvetrain setup correctly?
#11
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Originally Posted by hydfixer
the heads were milled .010, I had Xtrem motor sports put the heads on so it should be right. I used h/s rockers. The heads have 2.08/1.06 and @ 600 lift they flowed 335 and 230. On the dyno the curve started to drop 6300.
#12
Originally Posted by CANNIBAL
If it's falling off big time, it could be lifter issues, valve float, etc. The dyno graph could help us out.
#14
TECH Senior Member
iTrader: (2)
way way too many variables. you need a full breakdown for us to even get a picture of what is going on. those flow numbers sound outragous, not saying it isnt so, but if it wer true, then a big cam could easily push that motor to high 490 rwhp if it is a manual tranny.
#15
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I have 480rwhp..10.5:1..M6 all heavy stuff and no dyno tricks...your heads should get you 500rwhp..since mine only flow ~310cfm@.600
242/250 .595/.595 109 ..get the G5X3 or one like mine...still not enough..
242/250 .595/.595 109 ..get the G5X3 or one like mine...still not enough..
#18
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I made 455 RWHP and 438 RWTQ with a Lunati Stroker kit and a decent set of ls1 heads and a X1 cam. It drives and idles like a stock car.
With a set of the AFR's and a bigger cam plus a 90mm Intake i could make 500 RWHP easy.
EASY!
With a set of the AFR's and a bigger cam plus a 90mm Intake i could make 500 RWHP easy.
EASY!